CN101179830A - Service carrying channel transfer system - Google Patents
Service carrying channel transfer system Download PDFInfo
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- CN101179830A CN101179830A CNA2006101385435A CN200610138543A CN101179830A CN 101179830 A CN101179830 A CN 101179830A CN A2006101385435 A CNA2006101385435 A CN A2006101385435A CN 200610138543 A CN200610138543 A CN 200610138543A CN 101179830 A CN101179830 A CN 101179830A
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Abstract
The invention discloses a transference system for an operation bearer channel. The transference system for operation bearer channel includes: an operation launching module which is used for launching operation on a forward access channel; a 4A issue reporting module which is used for reporting 4A issue of uplink operation amount measuring on a random access channel according to the uplink operation amount in the process of signaling interaction between a mobile terminal and a network server at the initial phase after the operation is established; a transference module which is used for bearing and transferring the operation bearer channel to a special transmission channel through the forward access channel according to the 4A issue of uplink operation amount measuring reported on the random access channel. By adopting the 4A issue of an RACH channel for triggering transference from FACH status to DCH status, the problem of overlong delay of streaming service with a bearer type of I/B is greatly improved, and the service quality is also effectively improved.
Description
Technical field
The present invention relates to broadband CDMA system in the wireless communication field, relate in particular to a kind of service carrying channel transfer system.
Background technology
At WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) in the system, RRC (Radio Resource control, Radio Resource Control) carries out dynamic radio carrying control by configuration service measurement amount (Traffic Volume Measurements).Cardinal principle is: as measuring business volume value BO (Buffer Occupancy) during greater than certain thresholding 4A Threshold, report the 4A incident, as triggering the low rate radio bearer to high-rate wireless load bearing migration process (4A Event) or as the constraints of moving, as measuring business volume value BO (Buffer Occupancy) during, report the carrying of 4B Event triggered high-rate wireless to low rate wireless bearing transferring process (4B Event) or as the constraints of migration less than certain thresholding 4BThreshold.By this dynamic radio carrying controlling mechanism, provide power system capacity and service quality based on subscriber traffic.
The WCDMA system is divided into 4 big classes according to business characteristic with business: session service, interaction service, real-time class business and background business.Wherein interaction service and background business are called I/B class business for short, in the WCDMA system, are non real-time class business, and main loaded service has that web browses, ftp downloads and email etc. requires low business to real-time.The main feature of I/B class business is the integrality that needs to guarantee transfer of data, but does not require professional real-time requirement.On transmission channel bearing, when data transmit, I/B class business, can be according to the demand of downlink traffic demand or power system capacity, can carry FACH (Forward Access Channel, forward access channel) channel, also can carry DCH (Dedicated Channel, dedicated transmission channel) or HS-DSCH (High Speed Downlink Shared Channel, high speed descending sharing channel) channel (for descending).I/B class business on the radio bearer attribute, has comprised maximum bit (bit) speed and minimum bit speed, and promptly service rate all is an acceptable between two speed.
For real-time class business, such as streaming media service, at first must guarantee professional temporal real-time requirement, promptly specially do not pursue the integrality of business datum, still, must guarantee that business datum can be in time from the server incoming terminal.Business service can abandon the data that in time do not receive or send for guaranteeing data real-time in time.On upper-layer protocol, show as, real-time class business, the higher layer applications layer protocol is UDP (User DatagramProtocol, User Datagram Protoco (UDP)) agreement, I/B class business, higher layer applications layer protocol are TCP (Transmission Control Protocol, transmission control protocol) agreement.In real time the class business has one to guarantee bit speed on transmission bearer, that is, for guaranteeing service quality, transmission channel must the corresponding transmission bandwidth of distributing user, and channel bearing is necessary for DCH channel or HS-DSCH channel.And I/B class business does not just have this requirement, and service bandwidth is the actual requirement according to system, dynamic adjustment, and be a process that starts slowly, main purpose is the stability of assurance system.
When the user was signatory at operator place, its bearer types determined by signatory institute, and determined with needed service in future.In case signatory finishing, service bearer type are in a relatively fixing state.Contract into I/B class user such as the user, so, with professional all the relevant business of PS (Packet Switched, packet switching), no matter be web and the ftp business of I/B, still the streaming media service of real-time class all adopts the carrying of I/B class.So, following problem will occur, because the carrying of I/B class, business can be carried on FACH channel or the less DCH channel of speed ratio.Because I/B class carrying, business initial is set up, and is the capacity that guarantees system, all is to be based upon on the less or FACH channel of channel width, then according to actual traffic needs, triggers the migration of channel, adjusts on the bigger channel of rate bandwidth.Because the accumulation and the channel migration of traffic carrying capacity have a fixed response time, for the accumulation of traffic carrying capacity, be subjected to the restriction of a lot of conditions especially, for the professional this bearer types that starts slowly of I/B class, time delay more strengthens.And between terminal and the server for streaming media service, there is a time shaft synchronous, generally, each node between from the terminal to the server, data to Streaming Media, the data of buffer memory 5～10s, therefore, if the time delay that channel is moved to two-forty from low rate is excessive, even network can provide enough bandwidth to class business in real time such as Streaming Media, in the business initial stage, service quality still can not reach requirement, concrete shows as the phenomenon that mosaic or frame-skipping appear in picture.
Most of manufacturer is to the solution of this kind situation, all be at I/B class business initial establishment stage, business is based upon the higher dedicated transmission channel of bandwidth ratio, such as DCH 128k or DCH 144k, and then according to the downlink traffic demand of reality, bandwidth is adjusted to a suitable size, perhaps simply the FACH channel bearing is removed.The relatively poor problem of service quality in the business initial stage that the time delay of speed adjustment is brought adopt this scheme can solve really owing to still, all can be brought very big influence to the capacity of network and to other users.
Downstream video business, FACH channel are to the DCH channel migration, and the scheme that adopts is the 4A Event triggered of downlink user face measuring business volume (BO (Buffer Occupancy) Measurement) usually.Because the FACH channel is a common down channel, by all users in the system are shared, therefore, when system realized, the FACH channel must design the Flow Control module, therefore, at hot zones, when customer volume was bigger, the bandwidth that each user's reality can access was limited.
For streaming media service, between terminal and server, there is a time synchronizing relation, the transmission to data is that a mutual process is arranged between the two, the transmission of data and reception are the results who consults each other.At the business initial establishment stage, because user's downlink bandwidth that the FACH Flow Control causes is lower, will cause in the time range that nodal cache allows, the downlink data amount is less, even be that (minimum threshold of measuring business volume, protocol definition are 8bytes to 16bytes (byte) with the 4A threshold setting of FACH user's face, be generally the 4B thresholding), data volume does not reach the threshold requirement that triggers the 4A incident all the time, and the result elongates the channel migration time delay, finally causes the appearance of mosaic or frame losing phenomenon.
Therefore, need provide a kind of channel migration solution,, can guarantee that also channel migration satisfies the real-time requirement of streaming media service, guarantee professional service quality even service carrying channel is initially the FACH channel.
Summary of the invention
Main purpose of the present invention is to provide a kind of service carrying channel transfer system, be used for the professional FACH channel migration of I/B class, can very rapidly channel width be adjusted to the professional required bandwidth demand of S class (stream class), satisfy the demand of S class business, guarantee service quality time delay.
To achieve these goals, the invention provides a kind of service carrying channel transfer system.Service carrying channel transfer system comprises: professional initiation module is used for initiating on forward access channel professional; Report the 4A event module, be used for setting up the starting stage in business, the upstream traffic of the signalling interactive process that is undertaken by the portable terminal and the webserver, upstream traffic reporting is measured the 4A incident on Random Access Channel; And transferring module, be used for measuring the 4A incident according to the upstream traffic that reports by Random Access Channel, with the channel of bearer service by the forward access channel load bearing migration to dedicated transmission channel.
Business is real-time class business.The channel that triggers bearer service is that upstream traffic is measured the 4A incident or downlink traffic is measured the 4A incident by forward access channel load bearing migration to the condition of dedicated transmission channel.
Alternatively, the 4A thresholding of Random Access Channel is 16 bytes.
Alternatively, downlink dedicated transmission channel speed grade is 16k bps, 64k bps, 128k bps or 384k bps.
Alternatively, in the channel migration process, downlink dedicated transmission channel non real-time class Bearer Channel bandwidth is 64k bps.
By technique scheme, the present invention adopts the migration of RACH channel 4A Event triggered FACH attitude to the DCH attitude, and the long problem of time delay in the time of can greatly improving stream service bearer type and be I/B is improved service quality effectively.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to service carrying channel transfer method of the present invention; And
Fig. 2 is the block diagram according to service carrying channel transfer system of the present invention.
Embodiment
Describe the present invention below with reference to the accompanying drawings in detail.
With reference to Fig. 1, service carrying channel transfer method according to the present invention may further comprise the steps:
Step S102 initiates professional on forward access channel.
Business is real-time class business.
Step S104 sets up the starting stage in business, and the portable terminal and the webserver carry out Signalling exchange, and by the upstream traffic of signalling interactive process, upstream traffic reporting is measured the 4A incident on Random Access Channel.
The channel that triggers bearer service is that upstream traffic is measured the 4A incident or downlink traffic is measured the 4A incident by forward access channel load bearing migration to the condition of dedicated transmission channel.
Alternatively, the 4A threshold setting with Random Access Channel is 16 bytes.
Step S106 measures the 4A incident according to the upstream traffic that reports by Random Access Channel, with the channel of bearer service by the forward access channel load bearing migration to dedicated transmission channel.
Alternatively, downlink dedicated transmission channel speed grade is set to 16k bps, 64k bps, 128k bps or 384k bps.
Alternatively, in the channel migration process, downlink dedicated transmission channel non real-time class Bearer Channel bandwidth is set to 64k bps.
With reference to Fig. 2, service carrying channel transfer system 10 according to the present invention comprises: professional initiation module 20 is used for initiating on forward access channel professional; Report 4A event module 30, be used for setting up the starting stage in business, the upstream traffic of the signalling interactive process that is undertaken by the portable terminal and the webserver, upstream traffic reporting is measured the 4A incident on Random Access Channel; And transferring module 40, be used for measuring the 4A incident according to the upstream traffic that reports by Random Access Channel, with the channel of bearer service by the forward access channel load bearing migration to dedicated transmission channel.
Business is real-time class business.The channel that triggers bearer service is that upstream traffic is measured the 4A incident or downlink traffic is measured the 4A incident by forward access channel load bearing migration to the condition of dedicated transmission channel.
Alternatively, the 4A thresholding of Random Access Channel is 16 bytes.
Alternatively, downlink dedicated transmission channel speed grade is 16k bps, 64k bps, 128k bps or 384k bps.
Alternatively, in the channel migration process, downlink dedicated transmission channel non real-time class Bearer Channel bandwidth is 64k bps.
The present invention relates to a kind of service bearer method of broadband CDMA system, when real-time class service bearer is in non real-time transmission, be the I/B class promptly, when needs provide real-time class business to the user such as the customer service signing type, such as streaming media service, how to guarantee its service quality.
Technical scheme of the present invention is as follows:
1, UE (User Equipment, subscriber equipment) FACH state is up or the downlink traffic measurement reports the 4A incident to the condition of DCH state transition, and two conditions are as long as satisfy one.
2, get around descending FACH channel traffic and measure the 4A Event triggered, because business is set up the starting stage, terminal and server a signalling interactive process will be arranged, utilize the upstream traffic of signalling interactive process, adopt RACH (Random Access Channel, Random Access Channel) method of channel UE reporting uplink 4A incident triggers the FACH channel to the DCH channel migration, and RACH channel 4A thresholding can be arranged to 16bytes.
3, descending DCH channel speed grade is set to 16k bps, 64k bps, 128kbps, 384k bps.
4, when the FACH state in the process of DCH state transition, descending DCH channel I/B class Bearer Channel allocated bandwidth 64k bps.
Adopt method of the present invention, the FACH channel bearing is moved to DCH 128k time delay and is shortened dramatically, when the Streaming Media code rate is 80k bps, the channel bearing initial condition is the FACH channel, eliminate the mosaic of movie or adjusted phenomenon, following table is FACH channel 4A Event triggered is moved to time delay and the RACH channel 4A Event triggered time delay of DCH 128k from the FACH attitude comparative analysis, therefrom as can be seen, adopt of the migration of RACH channel 4A Event triggered FACH attitude to the DCH attitude, the long problem of time delay in the time of can greatly improving stream service bearer type and be I/B has improved service quality effectively.
In sum, the service quality of real-time class business is carried in the present invention for I/B, trigger than FACH 4A user face, adopt up RACH 4A to trigger the method for down channel migration, very big improvement has been arranged, from the migration time delay on as can be seen, time delay is controlled in the 5s basically, has reached the quality of service requirement of streaming media service.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a service carrying channel transfer system is characterized in that, comprising:
Professional initiation module is used for initiating on forward access channel professional;
Report the 4A event module, be used for setting up the starting stage, by moving in business
The upstream traffic of the signalling interactive process that the terminal and the webserver carry out, upstream traffic reporting is measured the 4A incident on Random Access Channel; And
Transferring module is used for measuring the 4A incident according to the upstream traffic that reports by described Random Access Channel, with the channel of the described business of carrying by described forward access channel load bearing migration to dedicated transmission channel.
2. service carrying channel transfer system according to claim 1 is characterized in that, described business is real-time class business.
3. service carrying channel transfer system according to claim 1, it is characterized in that the channel that triggers the described business of carrying is that upstream traffic is measured the 4A incident or downlink traffic is measured the 4A incident by described forward access channel load bearing migration to the condition of dedicated transmission channel.
4. service carrying channel transfer system according to claim 1 is characterized in that, the 4A thresholding of described Random Access Channel is 16 bytes.
5. service carrying channel transfer system according to claim 1 is characterized in that, downlink dedicated transmission channel speed grade is 16k bps, 64k bps, 128k bps or 384k bps.
6. service carrying channel transfer system according to claim 1 is characterized in that, in the channel migration process, downlink dedicated transmission channel non real-time class Bearer Channel bandwidth is 64k bps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101385435A CN101179830A (en) | 2006-11-07 | 2006-11-07 | Service carrying channel transfer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101385435A CN101179830A (en) | 2006-11-07 | 2006-11-07 | Service carrying channel transfer system |
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| CN101179830A true CN101179830A (en) | 2008-05-14 |
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| CNA2006101385435A Withdrawn CN101179830A (en) | 2006-11-07 | 2006-11-07 | Service carrying channel transfer system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196503A (en) * | 2011-06-28 | 2011-09-21 | 哈尔滨工程大学 | Service quality assurance oriented cognitive network service migration method |
| CN102883379A (en) * | 2012-09-06 | 2013-01-16 | 中国移动通信集团广东有限公司江门分公司 | Method and device for automatically determining whether user terminal supports small-rate business |
| CN103313272A (en) * | 2012-03-12 | 2013-09-18 | 中国移动通信集团公司 | Method and equipment for determining data service bearing mode |
| CN113242585A (en) * | 2021-06-22 | 2021-08-10 | 展讯通信（上海）有限公司 | Network switching method, device, equipment and medium |
-
2006
- 2006-11-07 CN CNA2006101385435A patent/CN101179830A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196503A (en) * | 2011-06-28 | 2011-09-21 | 哈尔滨工程大学 | Service quality assurance oriented cognitive network service migration method |
| CN102196503B (en) * | 2011-06-28 | 2014-04-16 | 哈尔滨工程大学 | Service quality assurance oriented cognitive network service migration method |
| CN103313272A (en) * | 2012-03-12 | 2013-09-18 | 中国移动通信集团公司 | Method and equipment for determining data service bearing mode |
| CN102883379A (en) * | 2012-09-06 | 2013-01-16 | 中国移动通信集团广东有限公司江门分公司 | Method and device for automatically determining whether user terminal supports small-rate business |
| CN113242585A (en) * | 2021-06-22 | 2021-08-10 | 展讯通信（上海）有限公司 | Network switching method, device, equipment and medium |
| CN113242585B (en) * | 2021-06-22 | 2022-11-01 | 展讯通信（上海）有限公司 | Network switching method, device, equipment and medium |
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